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Page cleanup routines updated to allow nested birdloops

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This commit is contained in:
Maria Matejka 2022-01-10 14:49:58 +01:00
parent 87512ccdff
commit b5155d5cea
1 changed files with 28 additions and 21 deletions
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49
sysdep/unix/alloc.c
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@ -61,7 +61,7 @@ alloc_page(void)
node *n = HEAD(fp->list);
rem_node(n);
if ((--fp->cnt < fp->min) && !shutting_down)
ev_send(&global_work_list, fp->cleanup);
ev_send(fp->cleanup->list, fp->cleanup);
void *ptr = n - FP_NODE_OFFSET;
memset(ptr, 0, page_size);
@ -94,7 +94,7 @@ free_page(void *ptr)
memset(n, 0, sizeof(node));
add_tail(&fp->list, n);
if ((++fp->cnt > fp->max) && !shutting_down)
ev_send(&global_work_list, fp->cleanup);
ev_send(fp->cleanup->list, fp->cleanup);
}
else
#endif
@ -108,18 +108,21 @@ free_page(void *ptr)
void
flush_pages(struct birdloop *loop)
{
ASSERT_DIE(birdloop_inside(&main_birdloop));
ASSERT_DIE(birdloop_inside(loop->parent->loop));
add_tail_list(&GFP->list, &loop->pages.list);
GFP->cnt += loop->pages.cnt;
struct free_pages *fp = &loop->pages;
struct free_pages *pfp = &loop->parent->loop->pages;
loop->pages.cnt = 0;
loop->pages.list = (list) {};
loop->pages.min = 0;
loop->pages.max = 0;
add_tail_list(&pfp->list, &fp->list);
pfp->cnt += fp->cnt;
rfree(loop->pages.cleanup);
loop->pages.cleanup = NULL;
fp->cnt = 0;
fp->list = (list) {};
fp->min = 0;
fp->max = 0;
rfree(fp->cleanup);
fp->cleanup = NULL;
}
static void
@ -128,15 +131,18 @@ cleanup_pages(void *data)
struct birdloop *loop = data;
birdloop_enter(loop);
struct free_pages *fp = &birdloop_current->pages;
ASSERT_DIE(birdloop_inside(loop->parent->loop));
while ((fp->cnt < fp->min) && (GFP->cnt > GFP->min))
struct free_pages *fp = &loop->pages;
struct free_pages *pfp = &loop->parent->loop->pages;
while ((fp->cnt < fp->min) && (pfp->cnt > pfp->min))
{
node *n = HEAD(GFP->list);
node *n = HEAD(pfp->list);
rem_node(n);
add_tail(&fp->list, n);
fp->cnt++;
GFP->cnt--;
pfp->cnt--;
}
while (fp->cnt < fp->min)
@ -150,15 +156,15 @@ cleanup_pages(void *data)
{
node *n = HEAD(fp->list);
rem_node(n);
add_tail(&GFP->list, n);
add_tail(&pfp->list, n);
fp->cnt--;
GFP->cnt++;
pfp->cnt++;
}
birdloop_leave(loop);
if (!shutting_down && (GFP->cnt > GFP->max))
ev_send(&global_work_list, GFP->cleanup);
if (!shutting_down && (pfp->cnt > pfp->max))
ev_send(pfp->cleanup->list, pfp->cleanup);
}
static void
@ -191,7 +197,8 @@ init_pages(struct birdloop *loop)
struct free_pages *fp = &loop->pages;
init_list(&fp->list);
fp->cleanup = ev_new_init(&root_pool, cleanup_pages, loop);
fp->cleanup = ev_new_init(loop->parent->loop->pool, cleanup_pages, loop);
fp->cleanup->list = (loop->parent->loop == &main_birdloop) ? &global_work_list : birdloop_event_list(loop->parent->loop);
fp->min = 4;
fp->max = 16;
@ -202,7 +209,7 @@ init_pages(struct birdloop *loop)
}
}
static event global_free_pages_cleanup_event = { .hook = cleanup_global_pages };
static event global_free_pages_cleanup_event = { .hook = cleanup_global_pages, .list = &global_work_list };
void resource_sys_init(void)
{